It works like real shifts; one day you work the whole day regularly (IC) and the next you have a day off (depending on your working schedule), as long as you hit your monthly quota - if you want to apply for the KPD but also roleplay with your friends outside of the KPD freely, I'd strongly suggest applying with an alternative account. Keep in mind that I have never experienced what it’s like to be an officer on the server, so the efficiency of my answer in comparison to others who have/are actually in the faction may well vary!